The CPU used in dopod 838 is the worst, and the built-in system is WM5.0, which is relatively general and not recommended. Although E6 1CPU has a normal main frequency, it adds a power-saving function and uses Saipan S60 system, which is a bit stupid. If you are not very good at mobile phone software, you can consider it. The CPU of Toshiba G500 had better have 4 16 MHz, but it uses wm(windows mobile phone) system, which is good in playability but not as simple as S60, so when you buy it, you should consider which of these two mobile phone systems you prefer before deciding. In addition, Toshiba should try to buy wm6.0 system, which is more advanced than 5.0. It seems that this mobile phone has both systems. Buy Nokia E6 1 Try to buy e6 1i and use the navigation keys on e 6 1 instead of the joystick.